SizeDimension95*45*35mmHousingMaterialPlastic+metalMCUAC6926ADisplay0.9inchdigitalLCD(DisplayCarBatteryVoltage,FMfrequency,Musicplaylist)Knobbutton5functionsknobbutton:FMFrequencySetting,Previous,Next,Volumeadjusting,CallAnswerFunctionsInputpower:DC12-24V3USBoutputsimultaneouslysupported2ReversibleUSBport(Type-A)OutputVoltage:5VTotaloutputcurrent:4.8A(MAX)Over-current,over-voltage,shortcut,andover-temperatureprotection.SupportautomaticrecoverySmartFastchargingmodematchingCarbatteryVoltagecheck:CarBatteryVoltagevoiceindicationanddisplay.AudioAUXaudiooutput:3.5MM/Stereo2.0U-diskandSD-Cardreadermusicsupported(MAX32GB)Audioformat:MP3APEFLACWAVWMAAudioDecode:16BIT/8K/12K/11.025/16K/22.05K/24K/32K/44.1K/48KHZPoweroffresumeplayingsupportedFMtransmitting76-108MHZTransmittingDistance:5MBluetoothBluetooth5.0compatiblewith4.1/4.0/2.1+edrBluetoothAudioplayingBluetoothHands-freephonecallPhoneCalldistance:1.5MAudioreceivingdistance:10M